2004-2007 Cadillac CTS-V Performance Mods Discussion, Stock vs Lightweight Flywheel in Cadillac CTS-V Series Forum - 2004 - 2007; I have been having some vibration issues on my 2005 CTS-V and last night I took the transmission out of ...

Stock vs Lightweight Flywheel

I have been having some vibration issues on my 2005 CTS-V and last night I took the transmission out of the car. I discovered that the dual mass flywheel is starting to come apart. I want to replace it but I am not sure which direction to go or what all of my options are, here is what I can currently get my hands on:

Re: Stock vs Lightweight Flywheel

Originally Posted by wross3030

Sounds like the LS7 setup is the way to go. Can I use the clutch I have with the LS7 FW or do I need an LS7 clutch to match?

The difference in cost for the whole LS7 set-up vs just the FW is negligible. Not to mention the minor difference in effort / labor to swap the FW vs. the whole clutch. Considering that you already have the whole clutch pulled out, you might as well replace the whole thing. I have been trying to make this decision myself, but will probably wait until my clutch goes completely or can't hold the torque. I am considering the LS7 from Lindsay, or the stage 2 from Monster. I have heard that you want to stick to a full face (avoid puck style - stage 3 and above) unless your car definitely exceeds the torque capacity of the stage 2 unit. I have been struggling with the decision to go light weight as well. Just remember, even the 28lb Monster FW and stock LS7 are still considerably lighter than the OEM dual mass turd. Some think the light weight 15 lb Monster FW is too light. Others absolutely love them. I think it probably just takes some time to get used to the change in engagement.

Perhaps I'm in the minority here but I picked up a new stock clutch for only a couple hundred bucks...i know its a turd but it was a good deal.. I'm still under warranty too so this is also cheap insurance in case of sudden failure. With all the stories of various clutches not working out, I didn't want to be under the gun..

I assume I can merry up a lighter flywheel with this setup and throw it in there if I have to..or just pass this one on to someone else.

I also don't know if I can give up my 2nd gear starts! Maybe when V isn't my dd anymore..

Ps_ any tips on how I can burn up my existing clutch on purpose? With all the wheel hop is it even possible?